<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>
	<body>
	</body>
</html>
<script type="text/javascript">
	// 声明一个类
	class Person{
		// 定义构造器
		constructor(name,age){
			this.name = name;
			this.age = age;
			this.className = '人类';
		}
		
		// 定义方法
		say(){
			console.log(this.name);
		}
	}	
		let person = new Person('小姐姐',18);
		console.log(person);
		
		class Man extends Person{
			constructor(name,age,height){
				super(name,age);
				this.height = height;
			}
		}
		
		let man = new Man('洪源',18,180);
		console.log(man);
</script>


